As it looks like the full version isn't likely to turn up, I decided to have a go at upgrading the existing copy...

I've reconverted the original song so that we have all of it rather than just the first half. I've also hacked the code so that it plays longer chunks (but this does mean that the disk accesses are longer so it's a bit of swings and roundabouts).

I didn't spend much time on the audio processing but I think it sounds okay.